Employee Benefit Plan (Details) (USD $)	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
Jan. 02, 2013 Employee 401(k) retirement savings plan	Mar. 30, 2013 Employee 401(k) retirement savings plan	Jan. 02, 2008 SEP	Mar. 31, 2012 SEP
Employee Benefit Plan
Minimum age requirement for automatic enrollment in the plan	21 years
Period of service to be completed for automatic enrollment in the plan	1 month
Contribution as a percentage of each employees' compensation	3.00%		3.00%
Vesting period for employer contributions	2 years
Contribution expenses		$ 16,000		$ 13,000

The amount of the cost recognized during the period for defined contribution plans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration